A device for positioning and puncturing medicine injection in cow mammary gland

Abstract

The present application relates to a kind of cow mammary gland positioning puncture medicine injection device, including injection positioning device, puncture mechanism and medicine injection system.Injection positioning device includes bowl-shaped cover with cow mammary gland shape, cover is arrayed with puncture hole and corresponding puncture needle seat on it;Cover inner wall is attached with medical sealing membrane, and negative pressure adsorption system is formed in cooperation with air extraction device.Puncture mechanism is pneumatic puncture needle assembly, including needle cylinder, piston, needle tube and air pressure control system, and needle action is controlled by electromagnetic reversing valve to advance and retreat.Using, first, cover is buckled on cow mammary gland and forms negative pressure fixation, then install puncture needle assembly, finally, remote control is completed to puncture medicine.The present application solves the problem of soft tissue positioning difficulty by negative pressure shaping, avoids dairy cow stress reaction by step operation, guarantees operation safety by remote control, significantly improves puncture accuracy and treatment effect, reduces drug dosage and treatment cycle.The present application is suitable for precise local treatment of various dairy cow mammary gland diseases.

Description

Technical Field

[0001] This invention relates to the technical field of bovine mammary gland puncture treatment, and particularly to a bovine mammary gland localization puncture and drug injection device. Background Technology

[0002] Mastitis and other mammary gland diseases are common in dairy farming, severely restricting dairy cow productivity and economic benefits. In clinical treatment, local drug therapy for deep mammary gland lesions typically requires precise delivery of medication to the lesion site via puncture and injection. However, existing mammary gland puncture techniques face numerous technical challenges in practical application, significantly impacting treatment outcomes.

[0003] From an anatomical perspective, bovine mammary glands are located on the ventral wall of the pubis region, between the roots of the thighs. They are flattened spherical or inverted conical in shape, primarily composed of epithelial tissue, connective tissue, adipose tissue, and abundant vascular and nerve tissue. This complex soft tissue structure presents significant challenges to precise puncture. Clinical practice has shown that the soft and elastic nature of mammary gland tissue, coupled with the unavoidable agitation of the cow during procedures, makes it difficult to accurately locate deep lesions with conventional punctures, resulting in "incomplete puncture" and directly affecting the effective distribution of drugs in the target area.

[0004] A more prominent issue is the stress response of dairy cows during puncture procedures. Extensive clinical observation has confirmed that dairy cows typically do not experience significant stress responses during routine milking due to conditioned reflexes. This means that certain auxiliary devices in the milking environment (such as hoods) do not cause agitation in the cows. However, when using a puncture needle, the pain from the needle penetrating the tissue can easily trigger a strong stress response in dairy cows, manifesting as sudden limb movements, body twisting, or retreating. This can not only lead to puncture misalignment and reduced treatment accuracy but may also cause damage to mammary tissue and even medical accidents such as needle breakage.

[0005] Currently available mammary aspiration devices are mostly modified from conventional medical needles, lacking designs adapted to the specific physiological structure and behavioral characteristics of dairy cows. In practical applications, these devices generally suffer from inaccurate positioning, poor stability, and insufficient control of stress responses. Furthermore, the use of existing mammary aspiration devices relies heavily on the experience and skills of the practitioners, lacking standardized operating methods and tools. This leads to unstable clinical treatment outcomes, low drug utilization, prolonged treatment cycles, and increased farming costs and veterinary risks.

[0006] Therefore, there is an urgent need to develop a precise puncture and drug delivery device for dairy cow mammary glands that can solve the above-mentioned technical problems. This device should effectively reduce stress response in dairy cows, improve the accuracy of puncture positioning, ensure that the drug is accurately delivered to the lesion site, and at the same time guarantee the safety and convenience of operation, so as to provide reliable technical support for the clinical treatment of dairy cow mammary gland diseases. Summary of the Invention

[0007] To address the problems existing in the above-mentioned bovine mammary gland puncture and drug injection, the present invention provides a bovine mammary gland positioning puncture and drug injection device that uses a cover to shape the bovine mammary gland, thereby facilitating puncture positioning.

[0008] The solution adopted by this invention to solve its technical problem is: a bovine mammary gland localization puncture and drug injection device, which is provided with an injection positioning device, including a cover, the inner wall of the cover is provided with a medical sealing film, an air extraction port is provided between the cover and the medical sealing film, and the air extraction port is connected to an air extraction machine for adsorbing the cover to the bovine mammary gland by negative pressure; the cover is provided with an array of puncture holes, and each puncture hole is provided with an injection needle seat around its periphery; A bovine mammary gland puncture needle, which is used in conjunction with an injection positioning device, includes a syringe and a needle tube that is slidably disposed within the syringe. The front end of the syringe is provided with a connecting seat that matches the injection needle hub. The syringe is provided with a pneumatic drive mechanism that drives the needle tube to move axially. An injection machine is also provided, which is connected to the tail end of the needle tube via an injection connecting tube for quantitative delivery of medication.

[0009] Preferably, the pneumatic drive mechanism includes a piston disposed inside the syringe, the piston being fixedly connected to the needle tube; the piston divides the syringe into a front chamber and a rear chamber, the front chamber and the rear chamber being respectively provided with an inlet and a outlet, and the needle tube is driven to perform needle insertion or retraction by controlling the air intake and exhaust states of the front and rear chambers.

[0010] Preferably, the front end of the syringe is encapsulated with a rubber stopper that can be penetrated by the needle tube, the rubber stopper being used to maintain the airtightness of the front end of the syringe when the needle tube is not extended.

[0011] Preferably, the injection needle hub is a tubular structure concentrically arranged with the puncture hole, and its inner wall is provided with internal threads or a snap-fit ​​structure for locking with the connecting seat of the bovine mammary gland puncture needle.

[0012] Preferably, the top edge of the cover is provided with a flexible attached skirt, which is used to enhance the seal between the cover and the skin at the root of the cow's mammary gland under negative pressure.

[0013] Preferably, the outer side of the cover is symmetrically provided with handles, and / or the lower part of the cover is provided with a height-adjustable support device.

[0014] Preferably, the syringe is further provided with a travel limiting mechanism to adjust the maximum length of the needle tube extending out of the connecting seat, thereby controlling the puncture depth.

[0015] Preferably, the injection machine includes a control unit and a pneumatic pulse pump. The control unit is used to remotely and synchronously control the suction action of the suction machine, the puncture action of the pneumatic drive mechanism, and the drug injection action of the pneumatic pulse pump.

[0016] The beneficial effects of this invention: The bovine mammary gland localization puncture and drug injection device provided by this invention, through a cover design that precisely matches the shape of the bovine mammary gland and combined with negative pressure adsorption fixation technology, effectively solves the technical problem of the difficulty in accurately locating the bovine mammary gland as soft tissue, making the puncture work more standardized and lowering the threshold for puncture operation. It cleverly utilizes the physiological characteristic that dairy cows are not prone to stress responses during milking, dividing the invasive operation into two stages: "device installation" and "remote puncture." The device installation stage is painless and does not induce stress; while the actual puncture stage can be completed remotely, without the operator needing to be in close contact with the cow, fundamentally avoiding the operational risks caused by cow stress and agitation. The remote control feature of this invention allows operators to complete the high-risk puncture and drug injection process from a safe distance, effectively avoiding the risks of personal injury and equipment damage that may be caused by sudden agitation of the cow in traditional operations. Through precise localization puncture, it ensures that the drug reaches the lesion site directly, improving drug bioavailability and shortening the treatment cycle.

[0017] This invention can be adapted to dairy cows of different body sizes and mammary gland development stages by changing the cover to different specifications. The puncture hole design conforms to veterinary clinical operation habits and is easy to promote and apply to the local treatment of various bovine mammary gland diseases. Attached Figure Description

[0018] Figure 1 This is a structural schematic diagram of the present invention in use; Figure 2 This is a front view structural diagram of the cover; Figure 3 This is a schematic diagram of the three-dimensional structure of the cover; Figure 4 This is a schematic diagram of the cover and its enlarged portion; Figure 5 This is a three-dimensional structural diagram of the bovine mammary gland puncture needle and injection needle hub; Figure 6 This is a cross-sectional schematic diagram of the bovine mammary gland puncture needle and injection needle hub; Figure 7 This is a schematic diagram of the enclosure structure for installing the air extraction fan.

[0019] Labels in the diagram: 1. Cow; 2. Injection positioning device; 3. Injector; 4. Mammary gland puncture needle; 5. Injection tube; 21. Cover; 22. Handle; 23. Injection port; 24. Injection needle hub; 25. Attached skirt; 26. Vacuum pump; 41. Syringe; 42. Needle tube; 43. Piston; 44. Rubber stopper; 45. Connector; 46. Rear air inlet; 47. Front air inlet. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be described in detail below.

[0021] Example 1: This invention provides a bovine mammary gland positioning puncture and drug injection device, which uses an injection positioning device 2 to shape the outer contour of the bovine mammary gland, thereby facilitating the positioning of the injection puncture. The main body of the injection positioning device 2 includes a cover 21 that can be fastened and installed on the bovine mammary gland. The cover 21 is a bowl-shaped structure similar to a suction cup, and its shape and size can match the shape of the bovine mammary gland. Its material can be made of EPDM, food-grade silicone, NBR, TPE / TPR, etc.

[0022] The cover 21 is provided with corresponding injection holes 23. The injection holes 23 are located at commonly used puncture sites of the cow's mammary gland. When in use, the cover 21 is fastened to the outside of the cow's mammary gland, and the inner wall of the cover 21 is tightly fitted to the cow's mammary gland. The cover 21 is used to shape and position the relatively soft cow's mammary gland, so as to facilitate the positioning of the puncture site.

[0023] There are several ways to fasten the cover 21 to the cow's mammary gland. One method is to use a manual fastening method, in which a pair of handles 22 are set on the outside of the cover 21. When in use, one worker holds the handles 22 to fasten the cover 21 to the cow's mammary gland, while another worker performs the puncture and injection operation. Alternatively, a support device, such as a telescopic tripod, can be connected and installed below the cover 21. First, the cover 21 is fastened to the cow's mammary gland, and then the height of the tripod is manually adjusted and fixed. The tripod supports the cover 21 and fixes it to the cow's mammary gland.

[0024] An injection needle seat 24 is fixed on the outside of the puncture hole of the cover 21. The injection needle seat 24 is a tubular structure concentric with the puncture hole. A buckle or internal thread is provided on the inside of the injection needle seat for installing a matching bovine mammary gland puncture needle 4.

[0025] The bovine mammary gland puncture needle 4 includes a needle tube 42 and a connecting seat. The connecting seat is fitted into the puncture needle seat and fixed thereto by a snap-fit ​​or threaded structure. The needle tube 42 is fitted into the connecting seat and can move along the axis of the connecting seat. In use, the connecting seat is inserted into the puncture needle seat, and then the needle tube 42 is pushed inward to insert the needle tip into the corresponding location in the bovine mammary gland to complete the puncture. The rear end of the needle tube 42 is connected to an injection tube 5 via a connector 45. An injection machine 3 is connected to the injection tube 5 for quantitative injection.

[0026] Furthermore, the puncture and injection device also includes a sealing film and a vacuum pump 26. Specifically, the sealing film is laid on the inner side of the cover 21 and is attached to the inner side of the cover 21 with medical adhesive, sealing the puncture hole on the cover 21. The vacuum pump 26 is installed on the outer side of the cover 21 and is connected to the inside of the cover 21. After sealing the puncture hole on the cover 21 with the sealing film, the cover 21 is fastened to the cow's mammary gland, forming a closed space between the cover 21 and the cow's mammary gland. At this time, the vacuum pump 26 is activated to create a negative pressure in its internal space, so that the cover 21 is adsorbed onto the cow's mammary gland by the negative pressure. At the same time, due to the negative pressure, the cow's mammary gland can fit more tightly with the cover 21, so that the cow's mammary gland can form a more stable shape and improve the accuracy of puncture positioning.

[0027] The core of the injection positioning device 2 is a cover 21, which has a semi-ellipsoidal bowl-shaped structure that matches the shape of the cow's mammary gland. The material is preferably food-grade silicone or EPDM material with a certain deformation adaptability. A flexible attaching skirt 25 extends coaxially from the top opening edge of the cover 21 to fit tightly against the cow's abdominal wall when the cover is fastened, reducing the pressure of the edge on the root of the mammary gland while significantly improving the sealing performance.

[0028] The bovine mammary gland puncture needle 4 also includes a syringe 41 and a piston 43. A connecting seat is set at the front end of the syringe 41, the piston 43 is installed inside the syringe 41, and a cap is set at the end of the syringe 41. The needle tube 42 is installed in the syringe 41, passing through both the cap and the piston 43 at the end. The needle tube 42 is sealed between itself, the cap, and the piston 43. The tail end of the needle tube 42 extends out of the syringe 41 and is connected to the injection machine 3 through the injection connecting tube 5. The tip of the needle tube 42 is inserted into a rubber stopper 44 installed in the connecting seat. The cap, the piston 43, and the rubber stopper 44 divide the syringe 41 into two chambers, front and rear. An air inlet is set on the rear chamber and connected to an air source. An exhaust port is set on the front chamber. The needle tube 42 is fixedly connected to the piston 43. High-pressure gas is introduced into the rear chamber through the air inlet to push the piston 43 forward, thereby moving the needle tube 42 forward. The needle tube 42 penetrates the rubber stopper 44 at the front end and continues to puncture the cow's mammary gland. Then, the injection machine 3 controls the injection of the drug. The injection machine 3 uses an air compressor to inject the drug solution. The air compressor uses a pulse mode to quantitatively deliver the drug solution for injection.

[0029] To achieve negative pressure shaping, in this embodiment, a medical sealing film is pre-laid on the inner wall of the cover 21 and attached using medical adhesive. This sealing film provides an airtight seal to all puncture holes from the inside. An air pump 26 is connected to the bottom of the cover 21, and the suction end of the air pump 26 is connected to the internal cavity of the cover 21. After the cover 21 is fastened to the outside of the mammary gland, the air pump 26 is activated to extract the internal air and create negative pressure. Under the action of negative pressure, the soft mammary gland is tightly adsorbed and fills the inner cavity of the cover 21, completing the physical shaping from "free soft tissue" to "fixed shape", which greatly improves the spatial accuracy of the subsequent puncture target point.

[0030] Meanwhile, the cover 21 is fastened to the cow's mammary gland, keeping the mammary gland in place. During the operation, even if the cow 1 has a stress response, the cover 21 and the mammary gland can remain relatively fixed, thus ensuring that the puncture needle puncture process is stable and accurate.

[0031] Furthermore, air inlets can be provided on both the front and rear chambers, namely the front air inlet 47 and the rear air inlet 46. The front air inlet 47 and the rear air inlet 46 are connected to the air source through an electromagnetic reversing valve. During use, the air intake and exhaust of the front and rear chambers can be controlled by the electromagnetic reversing valve. During the puncture, the needle is inserted by the rear chamber and the needle is expelled by the front chamber. After the injection, the needle is withdrawn by the front chamber and the needle is expelled by the rear chamber.

[0032] The bovine mammary gland puncture needle 4 is an independent, detachable component, including a syringe 41, a piston 43, a hollow needle tube 42, and a threaded connector at the front end. The threaded connector at the front end can be screwed into the needle tube connector 24 on the cover.

[0033] To achieve precise control and pneumatic drive of the puncture stroke, the syringe 41 is divided into a front chamber and a rear chamber that are not connected to each other by a sliding piston 43, a rubber stopper 44 fitted at the front end, and a cap at the end. The middle part of the needle tube 42 is rigidly fixed to the piston 43, and its tip is initially embedded and hidden in the front rubber stopper 44, while the tail end extends outward through the cap at the end and is connected to the injection tube 5 through a connector 45.

[0034] The front chamber sidewall has a front air inlet 47, and the rear chamber sidewall has a rear air inlet 46. The front and rear air inlets 47 and 46 are connected in parallel to a three-position five-way solenoid directional valve via air pipes. This solenoid directional valve is further connected to an external air source, such as an air compressor.

[0035] Needle insertion drive: When the electromagnetic reversing valve switches to the first state, the high-pressure gas from the gas source is filled into the rear chamber through the rear air inlet 46, while the front chamber is exhausted through the front air inlet 47; the pressure difference drives the piston 43 to move the needle tube 42 forward quickly, and the needle tip pierces the rubber stopper 44 and the medical sealing film inside the cover, directly reaching the breast lesion.

[0036] Needle withdrawal drive: After the injection is completed, the electromagnetic reversing valve switches to the second state, and high-pressure gas is filled into the front chamber through the inlet 47 and the rear chamber is exhausted; the piston 43 moves backward under pressure, which drives the needle tube 42 to be pulled out quickly.

[0037] To avoid safety accidents caused by stress in cows due to pain, the operation of this invention is decoupled into two independent stages: "proximal non-invasive installation" and "remote invasive operation". 1. Proximal Installation Stage: The veterinarian uses the handles 22 on both sides of the cover 21 or the telescopic tripod support device at the bottom to fasten the cover 21 onto the target cow's mammary gland. The vacuum pump 26 is turned on to establish negative pressure. Due to the conditioned reflex of the milking environment, this step will not cause agitation in the cow. Subsequently, based on the diagnosed lesion location, the corresponding puncture port is selected, and the assembled mammary gland puncture needle 4 is screwed onto the corresponding needle connector 24.

[0038] 2. Remote invasive procedure stage: The operator retreats to a safe distance from the trolley and issues instructions via the control terminal. The electromagnetic reversing valve activates, instantly completing the pneumatic needle insertion. After the needle is in place, the injection machine 3 in the control cabinet preferably uses a micro-injection pump driven by a stepper motor or a pneumatic pulse injection valve to push a quantitative amount of medication into the needle tube 42 directly to the lesion through the injection connecting tube 5.

[0039] 3. Remote needle removal and disassembly: After medication administration, remotely control the solenoid reversing valve to reverse air intake, instantly removing the needle. Finally, turn off the suction machine 26 to release pressure, remove the cover 21, and complete the entire treatment process.

[0040] Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other implementations obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

Claims

1. A bovine mammary gland localization puncture and drug injection device, characterized in that, include: The injection positioning device (2) includes a cover (21), the inner wall of which is provided with a medical sealing film, and an air extraction port is provided between the cover (21) and the medical sealing film. The air extraction port is connected to an air extraction machine (26) for adsorbing the cover (21) onto the cow's mammary gland by negative pressure. The cover (21) is provided with an array of puncture holes (23), and each puncture hole (23) is provided with an injection needle seat (24) around its periphery. A bovine mammary gland puncture needle (4) includes a syringe (41) and a needle tube (42) slidably disposed within the syringe (41). The front end of the syringe (41) is provided with a connecting seat that matches the injection needle seat (24). The syringe (41) is provided with a pneumatic drive mechanism that drives the needle tube (42) to move axially. An injection machine (3) is connected to the tail end of the needle tube (42) through an injection connecting tube (5) for quantitative delivery of drug solution.

2. The bovine mammary gland localization puncture and drug injection device according to claim 1, characterized in that: The pneumatic drive mechanism includes a piston (43) disposed inside the syringe (41), the piston (43) being fixedly connected to the needle tube (42); the piston (43) divides the syringe (41) into a front chamber and a rear chamber, the front chamber and the rear chamber being respectively provided with an inlet (47) and a outlet (46), and the needle tube (42) is driven to perform needle insertion or retraction by controlling the air intake and exhaust states of the front and rear chambers.

3. The bovine mammary gland localization puncture and drug injection device according to claim 2, characterized in that: The front end of the syringe (41) is encapsulated with a rubber stopper (44) that can be penetrated by the needle tube (42). The rubber stopper (44) is used to maintain the airtightness of the front end of the syringe (41) when the needle tube (42) is not extended.

4. The bovine mammary gland localization puncture and drug injection device according to claim 1, characterized in that: The injection needle seat (24) is a tubular structure concentrically arranged with the puncture hole (23), and its inner wall is provided with internal threads or snap-fit ​​structure for locking with the connecting seat of the bovine mammary gland puncture needle (4).

5. The bovine mammary gland localization puncture and drug injection device according to claim 1, characterized in that: The top edge of the cover (21) is provided with a flexible attached skirt (25), which is used to enhance the seal between the cover (21) and the skin at the root of the cow's mammary gland under negative pressure.

6. The bovine mammary gland localization puncture and drug injection device according to claim 1, characterized in that: The outer side of the cover (21) is symmetrically provided with handles (22), and / or the lower part of the cover (21) is provided with a height-adjustable support device.

7. The bovine mammary gland localization puncture and drug injection device according to claim 2, characterized in that: The syringe (41) is also provided with a travel limiting mechanism, which is used to adjust the maximum length of the needle tube (42) extending out of the connecting seat, thereby controlling the puncture depth.

8. The bovine mammary gland localization puncture and drug injection device according to claim 1, characterized in that: The injection machine (3) includes a control unit and a pneumatic pulse pump. The control unit is used to remotely and synchronously control the suction action of the vacuum pump (26), the puncture action of the pneumatic drive mechanism, and the drug injection action of the pneumatic pulse pump.

Images